Downloaded from www.Manualslib.com manuals search engine Reducing idling
If the vehicle is fitted with the START - STOP system there is an automatic re-
duction of the idling. If the engine is stopped on vehicles without START-STOP
system, such as when waiting in a traffic jam, the fuel economy is already
greater after 30 - 40 s than the fuel quantity which is required for engine re-
start.
Avoid short distances
When driving a short distance of less than about 4 km, the engine cannot
reach its operating temperature. As long as the engine has not reached oper-
ating temperature, the fuel consumption is significantly higher than with the
engine hot.
Pay attention to the correct tyre inflation pressure being maintained
Further information » page 161.
Avoid unnecessary ballast
Per 100 kg of weight, consumption increases by about 0.3 l/100 km. At a speed of 100 - 120 km/h, a vehicle fitted with a roof rack cross member without a load
will use about 10 % more fuel than normal due to the increased aerodynamic
drag.
Saving electricity
Electrical consumers (e.g. seat heating, air conditioning and the like) should
only be turned on for as long as necessary.
Use the cooling system economically
The air conditioning system compressor uses power from the engine when in
cooling mode, which will affect the fuel consumption.
It recommended to open the windows or the doors of a vehicle for which the
interior has been strongly heated through the effect of direct sunlight in order
to allow the heated air to escape.
The cooling system should not be switched on if the windows are open.DriveGreen functionFig. 121
Shown in the infotainment dis-
play
The DriveGreen function (hereinafter referred to only as DriveGreen) evaluates
the driving efficiency based on the information respecting the driving style.
Useful tips for reducing fuel consumption are also offered.
DriveGreen can be displayed on the Infotainment as follows.
›
Press the button in the Infotainment and then in the display the function
keys one after the other →
DriveGreen .
A
driving liquid display
With the driving is liquid the display is near the green dot. When accelerating
or braking, the indicator moves down or up.
B
“Green leaf”
The leaf margin shown in green shows with a few seconds, the current drive
efficiency. When driving economically there are several green layers on the
edge of the leaf. Otherwise no green colour appears and the leaf can disappear
completely.
C
Graphical review summary
The evaluation of the driving economy during the last 3 minutes or 1.5 minutes
(depending on type of Infotainment) is shown like a beam in 5-second incre-
ments. The current status is shown on the left and moves gradually to the
right. The higher the green bars, the more economic the driving style is.
D
Scoring
In the function key, the evaluation of driving efficiency is shown from the start
in the range from 0 to 100 points. The higher the indicated value, the more
economic the driving style is.
When you press the function key, a detailed assessment showing the driving
efficiency during the last 30 minutes is shown.
112Driving
Downloaded from www.Manualslib.com manuals search engine If the trip from the start, takes less than 30 minutes, then the assessment
takes in information from the previous trip (the bars are shown in dark green).E
Average fuel consumption
In the function key, the average fuel consumption from the start is displayed.
When you press the function key a detailed overview of the average fuel con-
sumption during the last 30 minutes is shown.
If the trip from the start, takes less than 30 minutes, then the average fuel
consumption takes in information from the previous trip (the bars are shown in
dark green).
F
Symbols in the display
The display may show the following four symbols, which give information on
the current driving style.
Ecological trip
The current speed has a negative effect on fuel consumption. The driving is not liquid, drive with anticipation.
Recommended gear.
Tips for reducing fuel consumption
When tapping the “Page” the display shows useful tips on how to reduce fuel consumption. These tips can to be helpful to drive more economically.
Note
■ Resetting the single-trip memory “from start” also resets the average con-
sumption E and the driving assessment D.■
With some Infotainment types changing the units for the fuel consumption
indicator causes the resetting of the average fuel consumption values
E
.
Avoiding damage to your vehicle
Introduction
This chapter contains information on the following subjects:
Driving Tips
113
Driving through water
113
This section of the manual contains important information on preventing dam-
age to the vehicle while driving.
Driving Tips
Only drive on such roads and in such terrain, which match the vehicle parame-
ters » page 192 , Technical data as well as your driving skills.
The driver is always responsible for deciding whether the vehicle can handle
travelling in the given terrain.WARNING■ Always adjust your driving to the current terrain and weather conditions.
Excessive speed or incorrect driving manoeuvres can cause damage to the
vehicle and lead to serious injuries.■
Combustible objects such as dry leaves or twigs caught under the base of
the vehicle could ignite on hot vehicle parts - risk of fire!
CAUTION
■ Pay attention to the ground clearance of the vehicle! When driving over ob-
jects which are larger than the ground clearance, the vehicle can get damaged.■
Any objects that get trapped under the vehicle floor must be removed as
soon as possible. These objects can damage the fuel lines, the brake system,
seals and other parts of the vehicle.
■
Drive slowly in unknown terrain and watch out for unexpected obstacles,
such as potholes, rocks, stumps, etc.
■
Check up on confusing sections of unpaved roads before travelling on them
and consider whether such travelling is possible without risk.
Driving through water
Fig. 122
Maximum permissible water lev-
el when driving through water
The following instructions must be observed if vehicle damage is to be avoided
when driving through water (e.g. flooded roads).
113Starting-off and driving
Downloaded from www.Manualslib.com manuals search engine During an intervention of the system, the warning light flashes in the instru-
ment cluster.
Anti-lock braking system (ABS)
Read and observe
on page 114 first.
ABS prevents the wheels locking when braking. Thereby, it helps the driver to
maintain control of the vehicle.
The intervention of the ABS is noticeable from the pulsating movements of
the brake pedal which is accompanied by noises.
When the ABS system is active, do not pump the brakes or lift off the brake
pedal.
Traction control (TCS)
Fig. 123
System button: Activating/deac-
tivating TCS
Read and observe on page 114 first.
TCS prevents the spinning of the wheels of the driven axle. TCS reduces the drive power transmitted to the wheels in the case of slipping wheels. Thereby,
for example, driving on road surfaces with low grip is made easier.
During a TCS intervention, the indicator light flashes in the instrument clus-
ter.
Activating/deactivating TCS
The activation or deactivation of TCS can be done, depending on equipment, in
one of the following ways.
› Infotainment
» Operating instructions Infotainment , chapter CAR - vehicle
settings .
› By briefly pressing the symbol key
» Fig. 123 .
Upon deactivation, in the instrument cluster the indicator light illuminates
and the display shows the following message.
Traction control (ASR) deactivated.
ASR OFF
Upon activation, in the instrument cluster the indicator turns
and the display
shows the following message.
Traction control (ASR) activated.
ASR ON
The TCS should normally always be enabled. The system should be deactivated
only in the following situations, for example.
› When driving with snow chains.
› When driving in deep snow or on a very loose surface.
› When “rocking a car free” when it has become stuck.
Electronic differential lock (EDL and XDS)
Read and observe
on page 114 first.
EDL
EDL prevents the turning of the respective wheel of the driven axle. EDL
brakes the spinning wheel, if necessary, and transmits the driving force to the
other driving wheel. Driving becomes easier on road surfaces with different
traction under each wheel of the driven axle.
EDL switches off automatically to avoid excessive heat generation on the
brake of the wheel being braked. Once the brakes have cooled down, there is
an automatic re-activation of EDL.
XDS
XDL is an extension to the electronic differential lock. XDL does not respond to
traction, but to the load relief of the inner front wheel of the driving axle dur-
ing fast cornering.
The automatic brake intervention on the brake of the wheel with reduced load
prevents the wheel from spinning. Thus, the traction is improved and the vehi-
cle can continue to follow the desired track.
Brake Assist (HBA)
Read and observe
on page 114 first.
HBA increases the braking effect and helps to shorten the braking distance.
115Assist systems
Downloaded from www.Manualslib.com manuals search engine The HBA is activated by very rapid depression of the brake pedal. To achieve
the shortest possible braking distance, the brake pedal must be applied firmly
until the vehicle has come to a complete standstill.
HBA is automatically switched off when the brake pedal is released.
Hill Start Assist (HHC)
Read and observe
on page 114 first.
HHC allows you to move your foot from the brake pedal to the accelerator ped-al without having to use the handbrake when pulling away on a gradient.
The system holds the brake pressure produced by the activation of the brake
pedal for approx. 2 seconds after the brake pedal is released.
HHC is active on slopes of >5 % when the driver door is closed. HHC is always
only active on slopes pulling away forwards or in reverse.
Multi collision brake (MCB)
Read and observe
on page 114 first.
The MCB helps to decrease speed after a collision through automatic brakinginterventions and to stabilize the vehicle. This reduces the risk of a subse-
quent crash due to uncontrolled vehicle movement.
The automatic brake interventions can take place only if the following condi-
tions are met.
There was a front, side and rear-end collision of a certain severity.
The impact speed was higher than approx. 10 km/h.
The brakes, the ESL and other required electrical systems remain function-
al after impact.
The accelerator pedal is not actuated.
Parking assistance (ParkPilot)
Introduction
This chapter contains information on the following subjects:
Function
117
Display in the Infotainment display
117Activation / deactivation118Automatic system activation when moving forward118
The parking aid (hereinafter referred to only as system) draws attention via
acoustic signals or the Infotainment display when manoeuvring around obsta-
cles in the vicinity of the vehicle.
WARNING■ The system only serves as an assistance and does not relieve the driver
of the responsibility for the vehicle operation.■
Moving persons or objects may not be recognised by the system sensors.
■
Under certain circumstances, surfaces of certain objects and types of
clothing cannot reflect the system signals. For this reason, such people or
objects may not be recognised by the system sensors.
■
External noise sources may affect the signals of the system sensors. Un-
der adverse conditions, this may cause objects or people to be not recog-
nised by the system.
■
Before reversing, you should make sure that there are no small obstacles,
such as rocks, thin posts, trailer drawbars etc. in front or behind your vehi-
cle. Such obstacles may not be recognised by the system sensors.
CAUTION
■ Keep the system sensors » Fig. 124 on page 117 clean, snow-and ice-free
and do not cover with any objects of any kind, otherwise the system function-
ing may be impaired.■
Under adverse weather conditions (heavy rain, water vapour, very low or
high temperatures etc.) system function may be limited “incorrect obstacle de- tection ”.
■
Additionally installed accessories such as e.g. bicycle carriers can impair the
system function.
116Driving
Downloaded from www.Manualslib.com manuals search engine The Cruise Control System (CCS) maintains a set speed without you having to
actuate the accelerator pedal.
The status where the CCS maintains the speed is referred to hereinafter as the
control .WARNING■
The CCS only serves as an assistance and does not relieve the driver of
the responsibility for the vehicle operation.■
Always adjust the speed and driving style to the current visibility, weath-
er, road and traffic conditions.
■
After pressing the clutch pedal, no interrupted control occurs! For exam-
ple, if a different gear is engaged and the clutch pedal is released, control is
continued.
Functioning
Fig. 129
Maxi DOT display: Examples of status displays the CCS
Fig. 130
Segment display: Examples of status displays the CCS
Read and observe on page 119 first.
GRA status displays » Fig. 129 , » Fig. 130
Speed set, but control is inactive.
Control is active.
No speed set.
System fault - seek assistance from a specialist garage immediately.
Basic requirements for starting the control The CCS is activated.
On vehicles with a manual transmission , the second gear or higher is en-
gaged.
On vehicles with an automatic transmission , the selector lever is in the
D/S position or in the Tiptronic position.
The current speed is higher than approx. 20 km/h.
This is only possible within the range which is permitted by the power output
and braking power of the engine.
WARNINGIf the engine power and engine braking effect is insufficient to maintain
the set speed, vehicle operation must be taken over!
Operating Description
Fig. 131
Cruise control system controls
Read and observe on page 119 first.
Overview of the control elements of the CCS » Fig. 131ADeactivate CCS (delete set speed) Interrupt control (sprung position) 119Assist systems
Downloaded from www.Manualslib.com manuals search engine Activate CCS (control deactivated)BTake control againa)
/ Increase speedCStart control / reduce speedDSwitch between GRA and Speed Limiter » page 120a)
If no speed is set the current speed is adopted.
At the start of the regulation the GRA regulates the vehicle to the current
speed, and this speed is shown on the instrument cluster display. The warning
light
illuminates in the instrument cluster.
Automatic control interruption
Automatic control interruption occurs if any of the following conditions are
met.
› The brake pedal is operated.
› When one of the brake assist systems (e.g. ESC) intervenes.
› Through an airbag deployment.
› The key
is actuated.
WARNING■
Always deactivate the cruise control system after use to prevent the sys-
tem being enabled unintentionally.■
Control may only be resumed if the set speed is not too high for the cur-
rent traffic conditions.
Note
■ During control, speed can be increased by pressing the accelerator pedal. Re-
leasing the accelerator pedal will cause the speed to drop again to the set
speed.■
By pressing the
button during the regulation this is cancelled and the
Speed Limiter is activated.
Speed limiter
Introduction
This chapter contains information on the following subjects:
Operation
120
Operation description
121
The Speed Limiter limits the maximum driving speed to the set speed limit.
This limit can only be exceeded by depressing the accelerator pedal fully.
The condition in which the Speed Limiter monitors a potential set speed limit
excess is referred to as Regulation.WARNING■
The speed limiter only serves as an assistance and does not relieve the
driver of the responsibility for the vehicle operation.■
Always adjust the speed and driving style to the current visibility, weath-
er, road and traffic conditions.
Operation
Fig. 132
Maxi DOT display: Examples of Speed Limiter status displays
120Driving
Downloaded from www.Manualslib.com manuals search engine Front Assistant
Introduction
This chapter contains information on the following subjects:
Radar sensor
122
Operation
123
Distance warning (dangerous distance)
123
Warning and automatic braking
123
Disable / enable
124
Information messages
124
The Front Assistant (from here on only referred to as the system) warns you of
the danger of a collision with a vehicle or another obstacle in front of the vehi-
cle and tries to avoid a collision or mitigate its consequences by automatically
applying the brakes as appropriate.
The area in front of the vehicle is monitored by a radar sensor » Fig. 135 on
page 122 .
WARNING■
The system only serves as an assistance and does not relieve the driver
of the responsibility for the vehicle operation.■
The system has physical and system-related limitations. For this reason,
the driver may experience some undesired or delayed system responses in
certain situations. You should therefore always be alert and ready to inter-
vene!
■
Always adapt your speed and safety proximity to the vehicle ahead to the
current visibility, weather, road and traffic conditions.
■
The increased passenger protection afforded through the system must
not tempt you to take greater risks than otherwise – risk of accident!
■
The system does not respond to crossing or oncoming objects.
CAUTION
In case of failure of more than one brake light on the vehicle or on the electri-
cally connected trailer, the system becomes unavailable.Radar sensorFig. 135
Mounting location of the radar
sensor
Read and observe and on page 122 first.
The radar sensor » Fig. 135(Hereinafter referred to simply as the sensor) may
detect objects by radiating and receiving electromagnetic waves.
The sensor function may be impaired in the events of one of the following.
› The sensor is soiled by mud, snow and the like.
› The area in front and around the sensor is obscured by labels, auxiliary lights
and similar.
› When visibility is poor, (e.g. fog, heavy rain, thick snowfall).
If the sensor is dirty or covered, the corresponding message appears on the
display of the instrument cluster » page 124, Information messages .
WARNING■
If you suspect that the sensor is damaged, deactivate the system. Have
the sensor checked by a specialist garage.■
The sensor can become misaligned by collisions or by damage to the front
of the vehicle, the wheel arch or the underside of the vehicle. This can lead
to impaired function of the sensor - risk of accidents! Have the sensor
checked by a specialist garage.
■
The area in front and around the senor should not be obscured by labels,
auxiliary lights and similar. This can lead to impaired function of the sensor
- risk of accidents!
CAUTION
Remove the snow with a brush and the ice with a solvent-free de-icer.122Driving
Downloaded from www.Manualslib.com manuals search engine OperationRead and observe
and on page 122 first.
The system support is provided in the following manner.› Alerts you about a dangerous proximity to the vehicle ahead.
› Warns you of an impending collision.
› Prepares the brakes for emergency braking prior to a detected danger.
› Assists with a brake action triggered by the driver.
› If the driver fails to respond to a detected danger, an automatic braking ac-
tion is performed.
The system can work only if the following basic conditions are met. The system is activated.
The TCS is activated » page 115, Traction control (TCS) .
The vehicle is moving forwards at a speed of more than approx. 5 km/h.
Note
The system can be impaired or may not be available, for example when driving
in “sharp ”curves or with an ESC engagement » page 114.
Distance warning (dangerous distance)
Fig. 136
Symbols in the instrument cluster: Note (dangerous
proximity)
Read and observe and on page 122 first.
The display of the distance warning is for vehicles with MAXI DOT display.
If a safe interval to the vehicle ahead falls below a minimum the display of the
instrument cluster shows the symbol
» Fig. 136 .
Immediately increase the proximity if the current traffic situation allows you to do so!
The proximity at which the warning is displayed depends on the current speed.
The warning may occur when driving between about 60 km/h and 210 km/h.
Warning and automatic braking
Fig. 137
Symbols in the instrument cluster: Warning or emer-
gency braking at low speed
Read and observe and on page 122 first.
Emergency braking at low speed
In a driving speed range of about 5 km/h to about 30 km/h the automatic brak-
ing action is not preceded by a warning. With an immediate impact hazard au-
tomatic braking is done with the breaking force increasing in stages.
With automatic braking the symbol appears » Fig. 137
in the display.
Advance warning
If the system detects a risk of collision, the symbol » Fig. 137
appears in the
display and you will hear an acoustic signal.
At the same time, the braking system is prepared for possible emergency brak- ing.
The pre-warning display can occur in the following situations. › If there is a risk of collision with a moving obstacle in a driving speed range of
about 30 km/h to about 210 km/h.
› There is a risk of a collision with a stationary moving obstacle in a vehicle
speed range of approximately 30 km/h to about 85 km/h.
With a warning the brake pedal must be pressed or the moving obstacle is to
be avoided!
Acute alert
If the driver does not react to the advance warning, the system briefly applies
the brake automatically via an active brake intervention to draw attention to
the potential danger of a collision again.
123Assist systems